Attachment for graders



May 8, 1923. 1,454,725

A. CIMFL ATTACHMENT FOR GRADERS Filed June 22 1921 WITNESSES INVENTOR A N ro/v C/MFL Patented May 8, 1923.

ui'roiv CIMFL, or RICE LAKE, WISCONSIN.

ATTACHMENT non eaannas.

' Application filed June 22, 1921. Serial No. 479,491.

which the following is a full, clear, and

exact description.

This invention relates to an attachment for road grading or scraping machines and refers more particularly to a supporting shoe adapted for connection therewith for the purpose of bridging wash-outs or depressions i i-the side of the road to prevent the rear outer supporting wheel and the blade from dropping down and cutting the Wash-out or depression deeper.

The invention further contemplates th provision of'an attachment of this character which is provided with means of ad ustment whereby the same may be normally disposed out of contact with the road surface, said means being located within con venient reach of and operable by the operator of the machine for lowering the same into contact with the road when desirable.

;A still further object in vie-w resides in the provision of a supporting shoe attachment which is simple and inexpensive to manufacture, highly efficient in its purpose, and which is readily applicable to standard machines of this type without materially altering the same.

lVith the above recited and other objects in view the invention resides in the novel construction, combination and arrangement of parts set forth in the following specification, particularly pointed out .inthe appended claims, and illustrated in the accompanying' drawings, in which- Figure 1 is a side view of a road grader equipped with a supporting shoe attachment constructed in accordance with the in vention and illustrating the same out of con tact with the road surface.

Fig. 2 is an enlarged rear elevation therof;

Referring to the drawings by characters of reference, '10 designates a road grader of any approved construction, the same being provided with front and rear supporting wheels 11 and 12 and the scraper blade 13. The attachment consists of a metal beam 14 bent at an angle to provide a road bed engaging shoe or runner 15 and a connecting arm 16. the latter being pivoted at its free extremity as at 17 to the arch frame 18 of the machine. In order to. provide means fore-raising or lowering the shoe or l runner 15' lnto or out of contact with the surface of the road, a threaded shaft 19 is,

provided, the same being pivotally connected as at 20 at its lower endto the shoe. The

upper extremity thereof is designed toyproject through an opening 21in the rear-axle 22 of the vehicle. 'A suitable adjusting sleeve 23 havingan 'interiorly threadedbore receives theupper end of the shaft 19 and engages the bearing 24 on the axle 22 for effecting the raising and lowering of the shoe. A manipulating wheel 25 is secured to the upper end of the sleeve-for rotating the same. Preferably a lateral brace rod.

26 is secured to the under side of the axle 3 as at 27' and to the shaft adjacent its connection with the shoe.

In use and operation of the attachment the manipulating wheel 25 is normally actu ated to lift the shoe retain the same out of contactwith the road surface. When the operator of the machine observes a rut,

depression or wash-out in the side of the road, the hand wheel-25 is manipulated to lower the shoe into contact with the surface of the road whereby the same will bridge the depression and prevent the dropping or sinking of the rear outer supporting wheel into said depression. The loose earth being pushed in advance of the blade will fill in the ditch or depression, whiletheshoe' 5 Y will serve to retain the blade on the same level.

It'will thus be seen that a simpleand inexpensive attachment for a grading machine is provided which will efliciently operate to prevent the dropping-of the blade below the level. of the road should ;a depression ,or, wash-out be'encountered. I

While there has been illustrated and described a single and preferred embodiment of the invention. no limitation is necessaril made to the precise structural details. as it is to be understood that variations and modifications which properly fall within the scope of the appended claims may be resorted to when found expedient.

Havin thus described my invention what machine, of an attachment therefor adaptedto be thrown into a road surface engaging positlon alongside of the rear supporting wheels for the purpose of bridging a de threaded manipulating memfiber 'swivelly mounted on the grader above said runner and threadedly engaging the stem for effect ing vertical adjustments of the runner.

2. An attachment for road grading machines comprising a longitudinally disposed runner having pivotal connection at its forward end to the machine in advance of one of the rear supporting wheels, and

adjustable means ofco-nnection between the rear supporting axle and. said runner for rigidly supporting the rear axle of the vehicle from the runner when the runner is adjusted to lie in a plane with the lower periphery of the rear supporting wheels, whereby said runner will bridge a depression in the road bed to preventthe drop-.

ping of the rear supporting wheels and the grader -blade below the surface of the road, said means of connection comprising a vertically disposed stem having pivotal connection with the runner at its lower end, a manipulating nut engaged on said stem, and a swiveled connection between said nut and the grader for holding the nut against vertical movement to effect relativevertical movement of the stem upon rotation of the nut. p

3. The combination with a road grading machine, of an attachment therefor comprising a longitudinally disposed runner haw ing pivotal connection at its forward end to the machine in advance of the rear supporting wheels and extending longitudinally thereof beyond the rear of the rear supporting wheels, and means of connec tion between said runner and the rear of the machine for adju'stably supporting the runner for vertical swinging movements,

whereby said runner may be lowered to a plane with the lower periphery of the wheel for the purpose of bridging a depression adjacent the edge ofthe road to prevent the dropping off the rear wheels and the grading blade below the level of the road surface, said means of connection comprising a vertically disposed threaded shaft pivot ally connected at its lower end to the runner, an apertured portion in the axle of the grader, a nut having a centrally threaded bore swiveled on said axle with the bore in alignment with the aperture, said threaded shaft extending through the aperture and threaded'ly engaged with the bore of the nut, and a transverse brace consisting of telescopically connected sections having connection at their free ends respectively with the axle of the grader and with the threaded stem adjacent its pivotal'conneo v tion with the 1111111911 4:. The combination with a road grading machine, of an attachment therefor comprising a longitudinally disposed runner,

having pivotal connection at its forwardv ti'cal swin'gingmovements, whereby said runner may be lowered to fa plane with the lower periphery of the wheel for the purpose of bridging a depression adjacent the edge of the road toprevent the droppingv of the rear wheels and the grading blade below the level of the road surface, and a telescopically adjustable brace eleinent con nected to the rear of the machine at one extremity and extending transversely there of and having connection at its opposite extremity with the runner.

ANTON CIMFL. 

